Air-lift for elevating liquids.



B. ANDREWS.l

Am LrrT ma ELEVAUNG LxQums. APPLICATIDN FILEI.) OCT. 7 1913.

Ll, l Patented me 29, 1915,

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Specification of Letters Patent.

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Putented June ,'29, litio'.

Application filed etober :7J i913. Serial llo. 793,794.

lie it known tiret A Benanti-uu Attorneys, e eitizen of tbe United States, residing in the eity'of Houston, county oi Harris, State oi' Texas, lieve invented or discovered certain new and useful Improvements in Air-Lifts for Eleveting Liquids, of wuieb tbe :followis e clear and complete disclosure.

iy invention relates to pneuznatlo lifts snob have heretofore beenmployed to elevate Writer and other liquids. Arrange- .nents of this liind new in use, of which there are e numbe" of systems, usually comprise :in eduetion or discharge pipe extending into tbe liquid to be eieveted, and means tor supplying' sir under pressure into the lower end of the eduction pipe. This eir mixes with the liquid in tbe eduetion pibe, thereby decreasing the Weight of tbe eolumn'oi liquid the eduetion pipe, causing to rise, due to the hydrostatic pressure` bellow. .drrengementsyo12 this lind ere new entensively used pumping 'Water from ertesien Wells. "iliey ere also used in seine instances in industriel purposes for elevating liquids of Various kinds. 'The eildoieney of en eru rangement of 'this gres oit diffusion of tbe eir in tire liquid, eines, if tbe sir is inely divided tillenglioutA will be reletively This been observed und runnerons devices here been devised forV eniuleiiytbe liquid be point Wire-re it is ing tbe ernuls'tying deviee.

The objeetoi my invention is to' provide 'en arrangement adapted to maintain tile oir in e finely divided condition frornfthe point where it is introduced to the top of the educ-- tion pipe, end further, to do'tl'iis Without materially increasing the resistaneefto the i-low of tbe liquid through the eduotion pipe.

' l eeeonipiisii this objeot by en arrangement,

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one embodiment of which sho-Wn in the draining eeeornpenying and forming e part o1 tnxs speclnoetlon.

ilie single figure shown 1n this drawing shows section of anl eduetlon or f liseliarge pipe with l1 poreted tnerein.

rteierr in detail to the drawing, the nun'ierei E. the discharge or eduetion und erelrind depends upon the idebese devices, however, proved of le Weine due to tbe tendency of theY siirusll.` bubbles or en' to reunite shortly reiter lleen?"4 rey improved arrangement ineen" pipe or conduit. l"l\.i. is shown broken uwuy at eee-b end, but it to be understood that its lower end 1t terminates in the body of liquid to be elevated :it u depth allowing' suiteble sulnuergenoe,'und et its upper end ino suitable discharge oriiioe or :it n suitable receiving tank. The numeral 2 designates u small oom pressed oir pipe centrally disposed in'the pipe l and through which eo1n} nessed air is supplied oy any suitable Ineens int-o the liquid iii tile pipe o The numeral 3 designates e perforated diephregmdisposed in the pipe lend coiled aroruid the eir pipe in e diaphragm is preferably arranged so es to tit the pipe l closely at its outer edge end 'the air pipeQ et itsinner edge, and'orms .e

moves upwardly through the pipe 1. Perioretlons el are formed in the diaphragm 3 spaced throughout its length so es te subdivide the bubbles of' air in the Water es they ere formed during the upwerd movement of 'the column of 'Water in the manner hereafter described.

The opere-tion of the arrangement deserbed as follows: Compressed eir is introduoedinto the pipe 2 and is discharged into .the liquid at the lower end of this pipe. The Weight of theoolumn byeA decreased endv tbe column of liquid :moves upwardly following the lscrew-like path formed by' the diaphragm. As the ...liquid `esconde the bubbles of air4 tend to grow in size end'to ascend in e Vertical direetion. i in Contact with the lower surface of the ieplirngln 3 and therefore lopposite the smell bentorotitms el. The bubbles pass 'through these openings and are broken up' into smell bubbles. This operation 'continuesus the column rises. The bubbles as -`they grow in size are repeatedly broken 'up spiral manner. The

screw-like passage for the liquid asA it.,

This tenderrey brings the bubbles' .of liquid is theren and the'eir' and Water ere maintained in the it may be used for elevating liquids of inany kinds, and While I have illustrated only one embodiment of my invention, I am aware ranged in the form o combination of an eduction pipe, an air pipe disposed therein and a spiral-shaped perforated member surrounding,r said air pipe, for the purpose described.

3. In apparatus of the kind described, the

combination of a fluid eduction pipe, aperorated diaphragm disposed therein and ara spiral, and means for introducing compressed air' into saidy eduction pipe, for the purpose described.

BENJAMN ANDREWS.

lVitnesses: l

iLLIAM F. KnYEs, vJonN lV. PETERS. 

